TW201517096A - Luminous keyboard device - Google Patents

Abstract

The present invention discloses a luminous keyboard device including a key module, a support plate, a flexible printed circuit (FPC), a light emitting element, a reflecting layer and a light guiding plate. The support plate has a plural of accommodating parts and the FPC is contacted with the plural of accommodating parts such that a plural of bending parts are formed on the FPC. The light emitting element and the reflecting layer are disposed on the FPC. When the light emitting element generates a light beam, the light beam which does not enter the light guiding plate is reflected by the reflecting layer on the bending parts and enters into the light guiding plate. Therefore, the amount of the light beam projected to the light guiding plate is increased.

Description

Illuminated keyboard device

The present invention relates to a keyboard device, and more particularly to a keyboard device having a lighting function.

Common computer peripheral input devices include a mouse device, a keyboard device, and a trackball device. The keyboard device can directly input characters and symbols to the computer, and thus is highly valued by users and input device manufacturers.

Please refer to FIG. 1 , which is a schematic diagram of the appearance of a conventional keyboard device. The keyboard device 1 has a plurality of buttons 10 on the surface thereof. The buttons 10 are classified into a general button 101, a numeric button 102, and a function button 103. The buttons are used by the user to generate a corresponding signal by finger pressure. The computer causes the computer to execute the touched key function. For example, the general key 101 is used to input symbols such as English letters, the numeric key 102 is used to input numbers, and the function keys 103 are used to provide various functions, such as F1~F12. The conventional keyboard device 1 is a keyboard device for a notebook computer.

With the evolution of technology, keyboard manufacturers are committed to the development of a variety of keyboard devices with special functions to meet the various needs of different users, taking the illuminated keyboard device as an example. The appearance of the conventional illuminated keyboard device is substantially the same as that of the conventional keyboard device 1. However, since the illuminated keyboard device provides the function of button illumination, its internal structure is different from that of the conventional keyboard device without the illumination function. The internal structure of the conventional illuminated keyboard device will be described below. Please refer to FIG. 2 , which is a cross-sectional view showing the structure of a conventional illuminated keyboard device. The conventional illuminated keyboard device 2 includes a plurality of buttons 20, a membrane switch circuit 21, a light guide plate 22, a backlight module 23, a support plate 24, a reflection sheet 25, and a base 26. The button 20 includes a button cap 201, a scissor-type connecting member 202, and a resilient member 203. In the conventional illuminated keyboard device 2, the above-mentioned components are arranged from top to bottom in the order of the button cap 201, the scissor-type connecting member 202, the elastic member 203, the membrane switch circuit 21, the support plate 24, the light guide plate 22, the reflection sheet 25, and The base 26 and the backlight module 23 are located on one side of the membrane switch circuit 22. The conventional illuminated keyboard device 2 is a keyboard device for a notebook computer (not shown), and the base 26 is disposed on the note. On the computer.

In the button 20, the button cap 201 is exposed outside the conventional keyboard device 2 and can be touched by the user. The scissors connecting member 202 is used to connect the button cap 201 and the support plate 24, and the elastic member 203 passes through the scissors connecting member. 202 is in contact with the button cap 201 and the membrane switch circuit 21, respectively. The membrane switch circuit 21 includes an upper circuit board 211, an isolation layer 212, and a lower circuit board 213. The upper circuit board 211, the isolation layer 212, and the lower circuit board 213 are all made of a light-transmitting material, and the light-transmitting material is Made of polycarbonate (Polycarbonate, PC) or polyethylene (PE). The upper circuit board 211 has a plurality of upper contacts 2111, the isolation layer 212 is located below the upper circuit board 211, and has a plurality of isolation layer openings 2121 corresponding to the plurality of upper contacts 2111, and the lower circuit board 213 is located below the isolation layer 212. There are a plurality of lower contacts 2131 corresponding to the complex upper contacts 2111 and a plurality of upper contacts 2111 forming a plurality of key switches 214.

The backlight module 23 includes a light-emitting circuit board 231 and a plurality of light-emitting elements 232 (only two are shown). The light-emitting circuit board 231 is located below the membrane switch circuit 21 for providing a power to the plurality of light-emitting elements 232, and the plurality of light-emitting elements The component 232 is disposed on the light-emitting circuit board 231 and extends into the plurality of reflector openings 251 of the reflective sheet 25 and the plurality of light guide apertures 221 of the light guide plate 22. When the plurality of light-emitting components 232 obtain power, they generate a plurality of light beams B. And the plurality of light beams B are projected to the light guide plate 22, wherein the plurality of light-emitting elements 232 are lateral light-emitting diodes. The light guide plate 22 is used to guide the plurality of light beams B to be projected to the button cap 201. In FIG. 2, the support plate 24 is located between the membrane switch circuit 21 and the light guide plate 22 for carrying the button cap 201, the scissor-type connecting member 202, the elastic member 203, and the membrane switch circuit 21. The reflective sheet 25 is disposed under the light guide plate 22 for reflecting the plurality of light beams B to project the plurality of light beams B upward, and avoiding the waste of the light beam B, wherein the two side edges 252 of the reflective sheet 25 are bent upward and covered. The plurality of sides 222 of the light plate 22 prevent the light guide plate 22 from leaking from the side 222.

In the conventional illuminated keyboard device 2, each of the button caps 201 has a light exiting area 2011, and the light exiting area 2011 is a position where letters or symbols are located, wherein the position of the light exiting area 2011 corresponds to the light guiding mesh point 223 on the light guide plate 22. The position is such that the light beam is directed upward through the light guiding mesh point 223 to its light exiting area 2011. The support plate 24 includes a plurality of support plate openings 241, and the plurality of support plate openings 241 correspond to the plurality of light guide dots 223 and the plurality of light exit regions 2011. On the other hand, since the membrane switch circuit 21 is made of a light-transmitting material, the plurality of light beams B can pass through the membrane switch circuit 21. Thereby, the plurality of light beams B are sequentially passed through the plurality of support plate openings 241 and the membrane switch circuit 21 in response to the plurality of light guide dots 223 to be projected to the plurality of light exit regions 2011, so that the letters or symbols on the button cap 201 can be It has light transmission and has a luminous effect.

It should be particularly noted that since the support plate 24 is made of an opaque material, in general, the support plate 24 is made of a metal material, which will block the passage of the plurality of beams B, because Therefore, the support plate 24 must be provided with a plurality of support plate openings 241 for the plurality of beams B to pass.

Due to the trend of thinner and lighter electronic devices in recent years, there is a need for users to lighten and thin the illuminated keyboard devices. Therefore, the keyboard device manufacturers in the market are working on the thinning of the illuminated keyboard device. The general practice is to reduce the thickness of each component of the illuminated keyboard device as much as possible, including the light guide plate and the light-emitting elements. Among them, a thinner light-emitting element (for example, a light-emitting element of less than 0.3 mm) has a lower luminous efficiency than a thicker light-emitting element (for example, a light-emitting element of 0.4 mm or 0.6 mm), and the cost of the thinner light-emitting element is much higher than that of the light-emitting element. Thick light-emitting elements. It not only causes the luminous efficiency of the conventional illuminated keyboard device to be low, but also increases its cost.

On the other hand, the thinner light guide plate has a smaller thickness of about 0.15 mm, and even if a light-emitting element of 0.3 mm is used, the light-emitting surface of the light-emitting element is larger than the thickness of the light guide plate, so that the light beam generated by the light-emitting element has only a partial light beam. Will project into the light guide, and the rest of the beam will diverge to cause a waste of the beam.

Therefore, there is a need for an illuminated keyboard device that can be both lightweight and luminous.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide an illuminated keyboard device that can be both thin and light and luminous efficiency.

A secondary object of the present invention is to provide an illuminated keyboard device that can increase light usage.

In a preferred embodiment, the present invention provides an illuminated keyboard device including a button module, a support plate, a flexible circuit board, at least one light emitting element, a reflective layer, and a light guide plate. The button module is exposed on an upper surface of the keyboard device, and the support plate is disposed on the button Below the key module, the button module is carried thereon, and the support plate has at least one receiving portion. The flexible circuit board is disposed under the button module for providing a power; wherein the flexible circuit board is in contact with the at least one receiving portion and the flexible circuit board includes at least one bent portion corresponding to the at least one receiving portion . The at least one light emitting component is disposed on the flexible circuit board and adjacent to the at least one receiving portion for generating at least one light beam according to the power. The reflective layer is disposed on the flexible circuit board for reflecting the at least one light beam. The light guide plate is disposed under the button module for the at least one light beam to pass through and guide the at least one light beam to be projected to the button module; wherein the thickness of the light guide plate is less than the thickness of the at least one light emitting element, and the projection The at least one light beam to the light guide plate enters the light guide plate, and the at least one light beam projected onto the flexible circuit board is reflected by the reflective layer located on the bent portion and projected into the light guide plate.

In a preferred embodiment, the present invention also provides an illuminated keyboard device including a button module, a support plate, a flexible circuit board, at least one light emitting component, a light guide plate, and a light shielding film. The button module is exposed on an upper surface of the keyboard device. The support plate is disposed under the button module for supporting the button module thereon, and the support plate has at least one receiving portion. The support plate is located below the button module for carrying the button module thereon, and the support plate has at least one receiving portion. The flexible circuit board is disposed below the button module and is in contact with the button module to provide a power. The at least one light emitting component is disposed on the flexible circuit board and above the at least one receiving portion for generating at least one light beam according to the power. The light panel is disposed between the button module and the support plate for the at least one light beam to pass through and guide the at least one light beam to be projected to the button module. The light shielding sheet is disposed between the button module and the light guide plate and is in contact with the flexible circuit board to block the passage of the at least one light beam, and the light shielding plate portion is attached to the button module to form corresponding to the at least one At least one bent portion of the receiving portion; wherein the thickness of the light guide plate is smaller than the thickness of the at least one light emitting element, and the at least one light beam projected onto the light guide plate enters the light guide plate, and the light is projected onto the light shielding plate At least one beam is bent by the bend The fold is reflected and projected into the light guide.

The illuminating keyboard device of the present invention is provided with a illuminating element having a large thickness, so that the luminous efficiency of the light beam outputted by the illuminating element is high. At the same time, a large-thickness light-emitting element is accommodated therein by providing a receiving portion on the support plate. Moreover, a reflective layer, a light shielding sheet or a reflective sheet that can reflect the light beam is disposed around the light emitting element to reflect the light beam generated by the light emitting element, and the light beam can be projected into the light emitting plate to be injected into the light emitting plate. Area to slightly enhance the lighting effect of the illuminated keyboard device. Since the light beam generated by the light-emitting element is not leaked, the light-emitting keyboard device of the present invention has a better light utilization rate. Therefore, the light-emitting keyboard of the present invention can be lightened and thinned by using a light guide plate having a small thickness, and a light-emitting element having a large thickness is used, thereby having better luminous efficiency, and at the same time, a light-emitting element having a larger thickness has a lower cost. .

1‧‧‧ keyboard device

2, 3, 4, 5‧‧‧ illuminated keyboard device

10, 20, 301, 401, 501‧‧‧ buttons

21‧‧‧Metal switch circuit

22, 35, 45, 55‧‧‧ light guides

23‧‧‧Backlight module

24, 31, 41, 51‧‧‧ support plates

25, 36, 56‧‧‧ reflection film

30, 40, 50‧‧‧ button module

32, 42, 52‧‧‧ Flexible circuit boards

33, 43, 53, 232‧‧‧Lighting elements

34, 44, 47, 54‧ ‧ reflective layer

37‧‧‧ accommodation space

46, 57‧‧ ‧ shading film

101‧‧‧General keys

102‧‧‧General keys

103‧‧‧ function keys

202‧‧‧Scissors connecting components

201, 3011, 4011, 5011‧‧‧ button cap

203, 3013‧‧‧ elastic components

211, 3021‧‧‧Upper circuit board

212, 3022‧‧‧ isolation layer

213, 3023‧‧‧ under the circuit board

214, 3024‧‧‧Key switch

231‧‧‧Lighting circuit board

252‧‧‧Side side of the reflection sheet

302, 402, 502‧‧‧ switch circuit board

311, 411, 511 ‧ ‧ housing

312, 462‧‧‧ second opening

313‧‧‧ third opening

321, 421, 572‧‧‧ bends

351, 451, 573‧‧‧ first opening

352, 452, 551‧‧ ‧ light guiding structure

461, 561‧‧‧ another bend

571‧‧ ‧ one end of the shading film

2111, 3021A‧‧‧Contacts

2121, 3022A‧‧‧ isolation opening

2131, 3023A‧‧‧ joints

3012, 4013, 5013‧‧‧ connecting elements

4012, 5012‧‧‧ framework

4014, 5014‧‧‧ first magnetic component

4015, 5015‧‧‧ second magnetic component

4011B‧‧‧Under the surface of the button cap

4011C‧‧‧Bumps

4013A‧‧‧ Side wall of connecting element

4013B‧‧‧Tilted channel

2011, 3011A, 4011A, 5011A‧‧‧ light-emitting areas

B‧‧‧beam

FIG. 1 is a schematic diagram showing the appearance of a conventional keyboard device.

2 is a schematic cross-sectional view showing the structure of a conventional illuminated keyboard device.

3 is a schematic exploded view of a partial structure of the illuminated keyboard device of the present invention in the first preferred embodiment.

4 is a cross-sectional view showing a partial structure of the illuminated keyboard device of the present invention in the first preferred embodiment.

FIG. 5 is a schematic exploded view of the structure of the switch circuit board of the illuminated keyboard device of the present invention in the first preferred embodiment; FIG.

Figure 6 is a schematic exploded view of a partial structure of the illuminated keyboard device of the present invention in a second preferred embodiment.

Figure 7 is a cross-sectional view showing a partial structure of the illuminated keyboard device of the present invention in a second preferred embodiment.

Figure 8 is a partial structural view of a button cap, a frame and a connecting member of the illuminated keyboard device of the present invention in a second preferred embodiment.

Figure 9 is a schematic exploded view of a partial structure of the illuminated keyboard device of the present invention in a third preferred embodiment.

Figure 10 is a cross-sectional view showing a partial structure of an illuminated keyboard device of the present invention in a third preferred embodiment.

In view of the problems of the prior art, the present invention provides an illuminated keyboard device that solves the problems of the prior art. Please refer to FIG. 3 and FIG. 4 simultaneously. FIG. 3 is a schematic diagram showing the partial structure explosion of the illuminated keyboard device of the present invention in the first preferred embodiment, and FIG. 4 is the first preferred embodiment of the illuminated keyboard device of the present invention. A schematic view of a partial structure. The illuminated keyboard device 3 includes a button module 30, a support plate 31, a flexible circuit board 32, a plurality of light-emitting elements 33, a reflective layer 34, a light guide plate 35, and a reflective sheet 36. The button module 30 is partially exposed on an upper surface of the illuminated keyboard device 3, and the button module 30 includes a plurality of buttons 301 and a switch circuit board 302. The plurality of buttons 301 are partially exposed on the upper surface of the illuminated keyboard device 3, and the switch circuit board 302 is It is disposed between the support plate 31 and the plurality of buttons 301 for being triggered by the plurality of buttons 301 to generate a plurality of button signals.

In the button module 30, each button 301 includes a button cap 3011, a connecting component 3012, and an elastic component 3013. The button cap 3011 is exposed on the upper surface of the illuminating keyboard device 3 for the user to touch, and each button The cap 3011 has a light exiting area 3011A. The light exiting area 3011A on the button cap 3011 is in the shape of a letter or a symbol. The connecting member 3012 is located between the support plate 31 and the corresponding button cap 3011 for connecting the support plate 31 and the button cap 3011 and moving the button cap 3011 up and down relative to the support plate 31. The elastic member 3013 is located below the corresponding button cap 3011 for providing elastic force to the button cap 3011 to move the button cap 3011 upward to be reset. In the preferred embodiment, the illuminated keyboard device 3 is a keyboard device for a notebook computer, and the connecting member 3012 is a scissor-type connecting member that swings with the movement of the button cap 3011, which is commonly known as a scissor foot. The elastic member 303 is a light transmissive rubber elastic body.

Next, the structure of the switch circuit board 302 will be described. Please refer to FIG. 5 , which is a schematic exploded view of the switch circuit board of the illuminated keyboard device of the present invention in a first preferred embodiment. The switch circuit board 302 includes an upper circuit board 3021, an isolation layer 3022, and a lower circuit board 3023. The upper circuit board 3021 has a plurality of upper contacts 3021A, the isolation layer 3022 is located below the upper circuit board 3021, and the isolation layer 3022 has a plurality of isolation layer openings 3022A corresponding to the plurality of upper contacts 3021A. The lower circuit board 3023 is located below the isolation layer 3022, has a plurality of lower contacts 3023A corresponding to the plurality of upper contacts 3021A, and forms a plurality of key switches 3024 with the plurality of upper contacts 3021A and the plurality of isolation layer openings 3022A. When the switch circuit board 302 is pressed by the elastic member 303, the corresponding upper contact 3021A extends into the corresponding isolation layer opening 3022A and contacts the corresponding lower contact 3023A to generate a button signal. In the preferred embodiment, the switch circuit board 302 is a thin film switch circuit.

Referring to FIG. 3 and FIG. 4 simultaneously, the support board 31 is disposed under the switch circuit board 302 of the button module 30 for supporting the button module 30 thereon, and the support board 31 has a complex The number housing portion 311. The flexible circuit board 32 is disposed below the support board 31 and above the light guide plate 35 for providing a power to the plurality of light-emitting elements 33, and the flexible circuit board 32 is in contact with the plurality of housing portions 311 and the flexible circuit board 32 is thus formed. The plurality of bent portions 321 of the plurality of receiving portions. The plurality of light-emitting elements 33 are disposed on a lower surface of the flexible circuit board 32 and adjacent to the plurality of receiving portions 311 for generating a plurality of light beams B in response to electric power, and the reflective layer 34 is disposed on the lower surface of the flexible circuit board 32 for reflection. Complex beam. In the preferred embodiment, the support plate 31 is made of a metal material, and the light-emitting element 33 is a laterally-shaped light-emitting diode having a large thickness, and has a thickness of about 0.4 mm, and the reflective layer 34 is coated. The cloth pattern is disposed on the lower surface of the flexible circuit board 32.

The light guide plate 35 is disposed under the flexible circuit board 32 for the plurality of light beams B to pass through and guide the plurality of light beams B to be projected upward to the button module 30, so that the plurality of light beams B guided by the light guide plate 35 pass through the plurality of button caps 3011. The plurality of light exiting regions 3011A are used to produce a light emitting effect. The light guide plate 35 includes a plurality of first openings 351 and a plurality of light guiding structures 352. The plurality of first openings 351 are disposed on the light guide plate 35 and correspond to the plurality of receiving portions 311 for forming a plurality of receiving spaces 37 with the plurality of receiving portions. Only one of the four is shown in Fig. 4, and the plurality of light-emitting elements 33 are housed therein. The plurality of light guiding structures 352 are disposed on a lower surface of the light guide plate 35 for guiding the plurality of light beams B to be projected onto the plurality of light exiting regions 3011A on the plurality of button caps 3011. On the other hand, the support plate 31 further includes a plurality of second openings 312 disposed on the support plate 31 and corresponding to the plurality of light guiding structures 352 for allowing the plurality of light beams B guided by the plurality of light guiding structures 352 to pass through the plurality of light beams. B is projected to the plurality of light exit areas 3011A. The reflective sheet 36 is disposed under the light guide plate 35 for reflecting the plurality of light beams B that are not projected into the light guide plate 35, so that the reflected plurality of light beams B are projected into the light guide plate 35. In the preferred embodiment, the light guide plate 35 is a light guide plate having a small thickness, and has a thickness of about 0.15 mm. The light guide structure 352 is a V-shaped cut microstructure.

The support plate 31, the flexible circuit board 32, the plurality of light-emitting elements 33, the reflective layer 34, The combination of the light guide plate 35 and the reflection sheet 36 is as shown in FIG. 4, in which the plurality of light-emitting elements 33 (only one of which is shown in FIG. 4) are disposed on the lower surface of the flexible circuit board 32 in an inverted manner, and the light guide plate 35 is provided. The thickness (i.e., 0.15 mm) is smaller than the thickness of the light-emitting element 33 (i.e., 0.4 mm), and the plurality of receiving portions 311 (only one of which is shown in Fig. 4) of the support plate 31 includes a projection of the third opening 313. In the preferred embodiment, the third opening 313 is formed by using a hole, and after the third opening 313 is formed on the support plate 31, a third hole 313 is formed around the third opening 313. Stamping work to form a raised portion that rises upward.

The operation of the user to touch the button cap 3011 to trigger the switch circuit board 302 to generate the button signal is well known to those skilled in the art and will not be described again. Next, the lighting situation of the illuminated keyboard device 3 will be described. In FIG. 4, when the illuminated keyboard device 3 is driven to operate, the plurality of light-emitting elements 33 generate a plurality of light beams B, and the plurality of light beams B projected toward the light guide plate 35 are directly projected into the light guide plate 35, and are guided by the plurality of light guide plates 35. The light structure 352 is projected upward, and the plurality of light beams B are separated from the light guide plate 35 and sequentially passed through the second opening 312 of the support plate 31, the light transmissive switch circuit board 302, and the light transmissive elastic member 3013, and are projected to The plurality of light exiting regions 3011A on the plurality of button caps 3011 are used to generate a light emitting effect. On the other hand, the plurality of beams B projected in the direction of the flexible circuit board 32 are reflected by the reflective layer 34 located on the bent portion 321 and projected into the light guide plate 35, and the plurality of light beams B are also passed through the second opening 312 and the switch. The circuit board 302 and the elastic member 3013 are projected to the plurality of light exiting regions 3011A. Similarly, the plurality of beams B projected in the direction of the reflection sheet 36 are reflected and projected into the light guide plate 35, and the plurality of beams B are also projected to the plurality through the second opening 312, the switch circuit board 302, and the elastic member 3013. Light exit area 3011A.

By the arrangement of the reflective layer 34 and the reflective sheet 36, the plurality of light beams B that are not projected in the direction of the light guide plate 35 can be reflected and enter the light guide plate 35. Since the plurality of light beams B generated by the plurality of light-emitting elements 33 enter the light guide plate 35 and are projected to the light exiting region 3011A, The number of light beams B is not wasted to ensure that the lightweight keyboard illuminating keyboard device 3 can produce a better illuminating effect and has a high light usage rate.

Specifically, there are three points. First, the bending angle of the plurality of bending portions 321 on the flexible circuit board 32 is determined according to the upward bulging degree of the plurality of accommodating portions 311, and the reflection angle of the reflective layer 34 is determined by the plural bending. The bending angle of the portion 321 is determined. That is to say, the reflection angle of the reflective layer 34 can be adjusted to the required angle of reflection by adjusting the upward bulging of the plurality of accommodating portions 311 as needed. Secondly, FIG. 3 shows five light-emitting elements 33, and the light-emitting elements 33 project different directions of the light beams B, for example, they can be arranged in a staggered manner, that is, the first light-emitting elements 33 (the rightmost side in FIG. 3) are connected to each other. The left side of the projection beam B is projected, the second light-emitting element 33 (adjacent to the first light-emitting element 33) projects the light beam B to the right in FIG. 3, and the third light-emitting element 33 (the center in FIG. 3) The light beam B is projected to the left in FIG. 3, and the fourth light-emitting element 33 (adjacent to the third light-emitting element 33) projects the light beam B to the right in FIG. 3, and the fifth light-emitting element 33 (in FIG. 3) The leftmost side projects the beam B to the left in Figure 3. Thirdly, the support plate 31 in the preferred embodiment is made of a metal material having high reflectivity, and has a function of reflecting a light beam, so that when the plurality of light beams B traveling in the light guide plate 35 exit the light guide plate 35, It can be reflected by the support plate 31 and enter the light guide plate 35 again to further enhance the light usage rate.

Furthermore, the present invention further provides a second preferred embodiment. Please refer to FIG. 6 and FIG. 7. FIG. 6 is a schematic diagram showing a partial structure explosion of the illuminated keyboard device of the present invention in a second preferred embodiment, and FIG. 7 is a second preferred embodiment of the illuminated keyboard device of the present invention. A schematic view of a partial structure. The illuminating keyboard device 4 includes a button module 40, a supporting plate 41, a flexible circuit board 42, a plurality of illuminating elements 43, a first reflective layer 44, a light guide plate 45, a visor 46, and a second reflective layer 47. The support plate 41 has a plurality of receiving portions 411 corresponding to the plurality of light-emitting elements 43. The flexible circuit board 42 has a plurality of bent portions 421, and the light guide plate 45 includes a first opening 451 and a plurality of light guiding structures 452. The structure of the illuminated keyboard device 4 of the preferred embodiment and The operation is substantially the same as that of the illuminating keyboard device 3 of the first preferred embodiment, and the similarities are not described again, but only the differences between the preferred embodiment and the first preferred embodiment are described. And there are four differences.

Regarding the first difference, the button module 40 of the preferred embodiment is different from the structure of the button module 30 of the first preferred embodiment, and the description thereof is as follows. The button module 40 is partially exposed on the upper surface of the illuminated keyboard device 4, and the button module 40 includes a plurality of buttons 401 and a switch circuit board 402. The plurality of buttons 401 are partially exposed on the upper surface of the illuminated keyboard device 4, and the switch circuit board 402 is It is disposed below the plurality of buttons 401 for being triggered by the plurality of buttons 401 to generate a plurality of button signals. Each button 401 includes a button cap 4011, a frame 4012, a connecting component 4013, a first magnetic component 4014, and a second magnetic component 4015. The button cap 4011 is exposed on the upper surface of the illuminated keyboard device 4 for the user. The pressure is applied, and each of the button caps 4011 has a light exiting area 4011A. The frame 4012 is in contact with the button cap 4011 for blocking the button cap 4011 to prevent the button cap 4011 from coming out of the frame 4012, and the connecting member 4013 is located below the frame 4012 and is in contact with the button cap 4011 for the button cap 4011 to be opposed to the button cap 4011. The frame 4012 moves up and down. The switch circuit board 402 is disposed under the connecting component 4013 for being triggered by the button 401 to generate a plurality of button signals.

Next, the connection relationship between the button cap 4011, the frame 4012 and the connecting component 4013 will be described. Please refer to FIG. 6 and FIG. 8 simultaneously. FIG. 8 is a second preferred embodiment of the button cap, the frame and the connecting component of the illuminated keyboard device of the present invention. A schematic diagram of a partial structure in the examples. Figure 8 further shows the structure of the button cap, the frame and the connecting elements. The first magnetic component 4014 is disposed on one of the lower surface 4011B of the button cap 4011 and located on one side of the button cap 4011, and the second magnetic component 4015 is disposed on one of the sidewalls 4013A of the connecting component 4013 and adjacent to the first magnetic component 4014. The magnetic cap force is generated in response to the first magnetic element 4014 to reset the button cap 4011. On the other hand, the button cap 4011 further includes a plurality of bumps 4011C, and a button cap 4011 is provided. The upper side of the button cap 4011 is located on the other side of the button cap 4011, and the other side of the button cap 4011 is different from the side of the first magnetic component 4014. The connecting member 4013 includes a plurality of inclined guiding grooves 4013B disposed on the other side wall 4013C of the connecting member 4013 and corresponding to the plurality of bumps 4011C. Each of the inclined guiding grooves 4013B is for contacting the corresponding bump 4011C, and is provided for The bump 4011C moves in the inclined guide groove 4013B to move the button cap 4011 up and down relative to the frame 4012. The frame 4012 covers the connecting member 4013 to restrict the button cap 4011 from moving only within the range of the frame 4012 and the connecting member 4013 without being pulled out of the frame 4012. In the preferred embodiment, the illuminated keyboard device 4 is a magnetic keyboard, and the connecting component 4013 is a connection frame that supports the button cap 4011 and does not swing with the movement of the button cap 4011. The first magnetic component 4014 The second magnetic component 4015 is a magnet, the plurality of bumps 4011C are integrally formed with the button cap 4011, and the switch circuit board 402 is a capacitive sensing circuit.

Briefly explain the operation of the button module 40 when the button cap 4011 is touched. When the user does not touch the button cap 4011, the first magnetic element 4014 on the button cap 4011 is attracted by the second magnetic element 4015 on the connecting member 4013. When the user touches the button cap 4011, the pressure exerted by the user on the button cap 4011 is greater than the magnetic force between the first magnetic component 4014 and the second magnetic component 4015, so that the plurality of bumps 4011C of the button cap 4011 are respectively One end of the inclined guide groove 4013B (that is, the upper end in FIG. 8) is moved to the other end of the inclined guide groove 4013B (that is, the lower end in FIG. 8), that is, the button cap 4011 is moved downward relative to the frame 4012. At the same time, the switch circuit board 402 under the connecting component 4013 detects the proximity of the first magnetic component 4014 and is triggered to generate a corresponding button signal. When the user no longer touches the button cap 4011, the magnetic force generated by the second magnetic element 4015 in response to the first magnetic element 4014 is no longer affected by the downforce to attract the first magnetic element 4014 to move upward. At this time, the plurality of bumps 4011C of the button cap 4011 are respectively moved to the one end of the inclined guide groove 4013B by the other end of the inclined guide groove 4013B, so that the button cap 4011 is reset.

Referring to FIG. 6 and FIG. 7 again, the second difference is that the illuminating keyboard device 4 of the preferred embodiment includes a light shielding sheet 46, and is not provided with a reflective sheet, and the light shielding sheet 46 is disposed on the light guide plate 45. The plurality of light beams B generated by the plurality of light-emitting elements 43 are blocked from passing through and reflected by the plurality of light beams B, and the plurality of light beams B are projected into the light guide plate 45. It should be noted that the light shielding sheet 46 is partially adhered to the lower surface of the connecting component 4013 of the button module 40, and a plurality of other bending portions 461 are formed, so that the plurality of light beams B projected to the light shielding sheet 46 are plural and another curved portion. The folded portion 461 is reflected and projected into the light guide plate 45. On the other hand, the light shielding sheet 46 has a plurality of second openings 462 corresponding to the plurality of light guiding structures 453 and above the plurality of light guiding structures 452 for the plurality of light beams B guided by the plurality of light guiding structures 452 to pass. In the preferred embodiment, the plurality of light guiding structures 452 of the light guide plate 45 adopt a biting structure.

The third difference is that the plurality of accommodating portions 411 of the support plate 41 are protrusions, and the protrusions are formed by a punching operation, wherein the plurality of accommodating portions 411 are protrusions that are raised downward. Since the support plate 41 is disposed at a different position from the support plate 31 of the first preferred embodiment, the support plate 41 of the preferred embodiment is not provided with an opening. In addition, the second reflective layer 47 is disposed on the upper surface of the support plate 41 for reflecting the plurality of light beams B.

The fourth difference is about the position of each component and the connection relationship. 6 and FIG. 7, the components in the illuminated keyboard device 4 are the button cap 4011, the frame 4012, the connecting member 4013, the light shielding sheet 46, the light guide plate 45, the flexible circuit board 42, and the support plate 41 from top to bottom. The switch circuit board 402 is disposed between the connecting member 4013 and the light shielding sheet 46, and the light emitting element 43 is disposed on the upper surface of the flexible circuit board 42 in a normal form (that is, in a non-inverted form), and the first reflective layer 44 It is printed on the upper surface of the flexible circuit board 42 in a printed manner.

Next, the projection of the complex beam B generated by the complex light-emitting elements 43 will be briefly described. When the plurality of light-emitting elements 43 generate the plurality of light beams B, they are projected toward the light guide plate 45. The plurality of light beams B are directly projected into the light guide plate 45, and are projected upward by the plurality of light guiding structures 452 on the light guide plate 45, so that the plurality of light beams B exit the light guide plate 45 and sequentially pass through the second opening 462 of the light shielding sheet 46. The light-transmissive switch circuit board 402 and the hollow connecting member 4013 are projected onto the plurality of light-emitting regions 4011A on the plurality of button caps 4011 to produce a light-emitting effect. On the other hand, the plurality of beams B projected in the direction of the flexible circuit board 42 are reflected by the first reflective layer 44 on the bent portion 421, and are projected into the light guide plate 45, and the plurality of beams B are also passed through the second opening. 462. The switch circuit board 402 and the connecting component 4013 are projected to the plurality of light exiting regions 4011A. Similarly, the plurality of light beams B projected in the direction of the light shielding sheet 46 are reflected and projected into the light guide plate 45, and the plurality of light beams B are also projected to the plurality through the second opening 462, the switch circuit board 402, and the connecting member 4013. Light exit area 4011A. In addition, when the plurality of light beams B traveling through the light guide plate 45 are leaked by the light guide plate 45, the plurality of light beams B can be reflected by the second reflective layer 47 on the support plate 41 and enter the light guide plate 45 again to further enhance the light utilization rate.

Furthermore, the present invention further provides a third preferred embodiment. 9 and FIG. 10, FIG. 9 is a schematic exploded view of a partial structure of the illuminated keyboard device of the present invention in a third preferred embodiment, and FIG. 10 is a third preferred embodiment of the illuminated keyboard device of the present invention. A schematic view of a partial structure. The button module 50, a support plate 51, a flexible circuit board 52, a plurality of light-emitting elements 53, a reflective layer 54, a light guide plate 55, a reflection sheet 56, and a light shielding sheet 57. The button module 50 includes a plurality of buttons 501 and a switch circuit board 502, and each button 501 includes a button cap 5011, a frame 5012, a connecting component 5013, a first magnetic component 5014 (not shown), and a first Two magnetic elements 5015. In the preferred embodiment, the first magnetic element 5014 is a magnet, and the second magnetic element 5015 is a metal block, but not limited thereto. In another preferred embodiment, the first magnetic element is a metal block and the second magnetic element is a magnet. The structure and operation of the button module 50 are the same as those of the button module 40 in the second preferred embodiment, and will not be described again.

The support plate 51 is disposed under the button module 50 for supporting the button module 50, the plurality of light-emitting elements 53, the light guide plate 55, the reflection sheet 56, and the light-shielding plate 57 thereon, and the support plate 51 has a plurality of receiving portions 511. The flexible circuit board 52 is disposed under the connecting component 5013 and is in contact with the connecting component 5013 for providing a power to the plurality of light emitting components 53. The plurality of light emitting components 53 are disposed on a lower surface of the flexible circuit board 52 and adjacent to the plurality of receiving portions 511. Used to generate a complex beam B in response to electrical power. The reflective layer 54 is disposed on the lower surface of the flexible circuit board 52 for reflecting the plurality of light beams B. In the preferred embodiment, the support plate 51 is made of a metal material, and the receiving portion 511 is an opening formed by the operation of the hole, and the light-emitting element 53 is a lateral light having a thickness of about 0.4 mm. The polarizer 54 and the reflective layer 54 may be disposed on the lower surface of the flexible circuit board 52 by coating or printing.

The light guide plate 55 is disposed above the flexible circuit board 52 for the plurality of light beams B to pass through and guide the plurality of light beams B to be projected upward to the button module 50, so that the plurality of light beams B guided by the light guide plate 55 pass through the plurality of button caps 5011. The plurality of light exiting regions 5011A are used to produce a light emitting effect. The light guide plate 55 has a plurality of light guiding structures 551 disposed on a lower surface of the light guide plate 55 for guiding the plurality of light beams B to be projected onto the plurality of light exiting regions 5011A on the plurality of button caps 5011. It should be noted that the plurality of light-emitting elements 53 are disposed in a space beside the side of one of the light guide plates 55. Therefore, the light guide plate 55 does not need to be provided with an opening to form a receiving space for accommodating the plurality of light-emitting elements 53. Therefore, the direction in which the plurality of light-emitting elements 53 project the light beam B is the same. In the preferred embodiment, the light guide plate 55 is a light guide plate having a thickness of about 0.15 mm, and the light guide structure 551 is a light guide ink.

The light shielding sheet 57 is disposed between the connecting component 5013 of the button module 50 and the light guide plate 55 and is in contact with the flexible circuit board 52 for blocking the passage of the plurality of light beams B, and one end 571 of the light shielding sheet 57 is attached to one of the connecting members 5013. A bent portion 572 is formed on the surface, wherein one bent portion 572 corresponds to the plurality of receiving portions 511. In addition, the light shielding sheet 57 has a plurality of first openings 573 corresponding to the plurality of light guiding structures 551 and located above the plurality of light guiding structures 551 for providing The plurality of light beams B guided by the plurality of light guiding structures 551 pass. The reflective sheet 56 is disposed below the light guide plate 55 for reflecting the plurality of light beams B that are not projected into the light guide plate 55, so that the reflected complex light beam B is projected into the light guide plate 55. The reflection sheet 56 partially protrudes into the plurality of accommodating portions 511 and is in contact with the plurality of accommodating portions 511 to form a plurality of other bent portions 561, so that the plurality of light beams B projected to the reflection sheet 56 are reflected by the plurality of other bending portions 561 and projected into the plurality of bending portions 561. In the light guide plate 55.

The combination of the support plate 51, the flexible circuit board 52, the plurality of light-emitting elements 53, the reflective layer 54, the light guide plate 55, the reflection sheet 56, and the light-shielding sheet 57 is as shown in FIG. 10, wherein the plurality of light-emitting elements 53 (shown only in FIG. 9) One) is disposed on the lower surface of the flexible circuit board 52 in an inverted manner, and the thickness of the light guide plate 55 (i.e., 0.15 mm) is smaller than the thickness of the light-emitting element 53 (i.e., 0.4 mm).

The operation of the user to touch the button cap 5011 to trigger the switch circuit board 502 to generate the button signal is exactly the same as that in the second preferred embodiment, and therefore will not be further described. Next, the lighting situation of the illuminated keyboard device 5 will be described. In FIG. 9, when the illuminated keyboard device 5 is driven to operate, the plurality of light-emitting elements 53 generate a plurality of light beams B, and the plurality of light beams B projected toward the light guide plate 55 are directly projected into the light guide plate 55, and are guided by the plurality of light guide plates 55. The light structure 551 is projected upward, and the plurality of light beams B are separated from the light guide plate 55 and sequentially passed through the plurality of first openings 573 of the light shielding sheet 57, the switch circuit board 502, and the connecting member 5013, and are projected onto the plurality of key caps 5011. The light exiting area 5011A is used to generate a light emitting effect. On the other hand, the plurality of light beams B projected toward the flexible circuit board 52 and the light shielding sheet 57 are respectively reflected by the light reflecting layer 54 and the bending portion 572, and are projected into the light guiding plate 55, and the plurality of light beams B are also first opened by the plural number The hole 573, the switch circuit board 402, and the connection member 5013 are projected to the plurality of light exit regions 5011A. Similarly, the plurality of beams B projected in the direction of the reflection sheet 56 are reflected and projected into the light guide plate 55, and the plurality of beams B are also projected through the plurality of first openings 573, the switch circuit board 402, and the connecting member 5013. A plurality of light exit areas 5011A.

According to the above preferred embodiments, the illuminating keyboard device of the present invention is provided with a illuminating element having a large thickness, so that the luminous efficiency of the light beam outputted by the illuminating element is high. At the same time, a large-thickness light-emitting element is accommodated therein by providing a receiving portion on the support plate. Moreover, a reflective layer (on the flexible circuit board), a light shielding sheet or a reflection sheet for reflecting the light beam is disposed around the light emitting element to reflect the light beam generated by the light emitting element, thereby ensuring that the light beam can be projected by entering the light guide plate. To the multiple light-emitting areas of the button module to slightly enhance the lighting effect of the illuminated keyboard device. Since the light beam generated by the light-emitting element is not leaked, the light-emitting keyboard device of the present invention has a better light utilization rate. Therefore, the light-emitting keyboard of the present invention can be lightened and thinned by using a light guide plate having a small thickness, and a light-emitting element having a large thickness is used, thereby having better luminous efficiency, and at the same time, a light-emitting element having a larger thickness has a lower cost. .

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent changes or modifications made without departing from the spirit of the present invention should be included in the present invention. Within the scope of the patent application.

31‧‧‧Support board

32‧‧‧Soft circuit board

33‧‧‧Lighting elements

34‧‧‧reflective layer

35‧‧‧Light guide

36‧‧‧reflector

37‧‧‧ accommodation space

311‧‧‧ Housing

312‧‧‧Second opening

313‧‧‧ third opening

321‧‧‧Bend

351‧‧‧First opening

352‧‧‧Light guiding structure

B‧‧‧beam

Claims (17)

An illuminated keyboard device includes: a button module exposed on an upper surface of the illuminated keyboard device; a support plate disposed under the button module for carrying the button module thereon, and the support The board has at least one receiving portion; a flexible circuit board is disposed under the button module for providing a power; wherein the flexible circuit board is in contact with the at least one receiving portion and the flexible circuit board includes at least one At least one light-emitting component is disposed on the flexible circuit board and adjacent to the at least one receiving portion for generating at least one light beam according to electrical power; and a reflective layer disposed on the flexible circuit board The light guide plate is disposed under the button module for allowing the at least one light beam to pass through and guiding the at least one light beam to be projected to the button module; wherein the light guide plate is The thickness is less than the thickness of the at least one light emitting element, and the at least one light beam projected onto the light guide plate enters the light guide plate, and the at least one light beam projected onto the flexible circuit board Located on the reflective layer reflects the projected bent portion enters the light guide plate. The illuminating keyboard device of claim 1, wherein the flexible circuit board is disposed below the support plate and above the light guide plate, and the at least one light emitting component and the reflective layer are disposed on the flexible circuit board. One of the lower surfaces. The illuminating keyboard device of claim 2, further comprising a reflective sheet disposed under the light guide plate for reflecting the at least one light beam to project the at least one light beam into the In the light guide plate. The illuminating keyboard device of claim 2, wherein the button module comprises: a plurality of buttons exposed on the upper surface of the illuminating keyboard device, and each of the buttons comprises: a button cap exposed to the illuminating The upper surface of the keyboard device, and each of the button caps has a light exiting area, such that the at least one light beam guided by the light guide plate passes through the plurality of light exiting regions; a connecting component is located between the support plate and the button cap For connecting the support plate and the button cap and moving the button cap relative to the support plate; and an elastic element located below the button cap for providing an elastic force to the button cap, the button cap And a switch circuit board disposed between the support board and the plurality of keys for being triggered by the plurality of elastic elements to generate a plurality of key signals. The illuminating keyboard device of claim 4, wherein the switch circuit board comprises: an upper circuit board having a plurality of upper contacts; an isolation layer located below the upper circuit board, the isolation layer having a corresponding The plurality of isolation layer openings of the plurality of upper contacts, when the switch circuit board is touched, the plurality of upper contacts extend into the plurality of isolation layer openings; and the lower circuit board is located below the isolation layer, corresponding to A plurality of lower contacts are formed on the complex contacts and a plurality of key switches are formed on the complex upper contacts. The illuminating keyboard device of claim 1, wherein the flexible circuit board is disposed between the support plate and the button module and below the light guide plate, and the at least one light emitting component and the reflective layer are disposed. On one of the upper surfaces of the flexible circuit board. The illuminating keyboard device according to claim 6, further comprising a light shielding film The light guide plate is configured to block the at least one light beam from passing through and reflect the at least one light beam, and the at least one light beam is projected into the light guide plate; wherein the light shielding sheet is partially attached to the button module to form at least one The other bent portion causes the at least one light beam projected to the light shielding sheet to be reflected by the other bent portion to be projected into the light guide plate. The illuminating keyboard device of claim 6, wherein the button module comprises: a plurality of buttons exposed on the upper surface of the illuminating keyboard device, and each of the buttons comprises: a button cap exposed to the illuminating The upper surface of the keyboard device, and each of the button caps has a light exiting area, such that the at least one light beam guided by the light guide plate passes through the plurality of light exiting regions; and a frame is in contact with the button cap to block the button cap And preventing the button cap from coming out of the frame; a connecting component located below the frame and contacting the button cap for moving the button cap up and down relative to the frame; a first magnetic component disposed on the And a second magnetic component disposed on the connecting component for generating a magnetic force to reset the button cap according to the first magnetic component; and a switch circuit board disposed on the connecting component Below, for triggering by the first magnetic element to generate a plurality of button signals. The illuminating keyboard device of claim 1, wherein the light guide plate comprises: at least one first opening, disposed on the light guide plate and corresponding to the at least one receiving portion, and the at least one receiving portion Forming at least one receiving space to receive the at least one light emitting element therein; and a plurality of light guiding structures disposed on a lower surface of the light guiding plate for guiding the at least one light beam Projected to the button module. The illuminating keyboard device of claim 9, wherein the supporting plate further comprises a plurality of second openings disposed on the supporting plate and corresponding to the plurality of light guiding structures for being used by the plurality of light guiding structures The at least one light beam is guided to pass, so that the at least one light beam is projected to the button module. The illuminating keyboard device of claim 1, wherein the accommodating portion is a third opening, a protrusion, or another protrusion including a fourth opening, so that the flexible circuit board The at least one bent portion may form a corresponding bending angle according to the third opening, the protrusion or the other protrusion portion including the fourth opening, and the support plate is made of a metal material . An illuminated keyboard device includes: a button module exposed on an upper surface of the illuminated keyboard device; a support plate located below the button module for carrying the button module thereon, and the support plate Having at least one receiving portion; a flexible circuit board disposed under the button module and in contact with the button module for providing a power; at least one light emitting component disposed on the flexible circuit board and located at the at least one receiving portion Above the portion, at least one light beam is generated for the electric power; a light guide plate is disposed between the button module and the support plate for the at least one light beam to pass through and guide the at least one light beam to be projected to the button And a light shielding sheet disposed between the button module and the light guide plate and in contact with the flexible circuit board for blocking the passage of the at least one light beam, and the light shielding plate portion is attached to the button module Forming at least one bent portion corresponding to the at least one receiving portion; wherein the thickness of the light guide plate is less than the The thickness of the light-emitting element is less, and the at least one light beam projected onto the light guide plate enters the light guide plate, and the at least one light beam projected to the light-shielding sheet is reflected by the bent portion and projected into the light guide plate. The illuminating keyboard device of claim 12, further comprising a reflective sheet disposed under the light guide plate for reflecting the at least one light beam; wherein the reflective sheet portion extends into the at least one receiving portion to form The at least one other bent portion causes the at least one light beam projected to the reflective sheet to be reflected by the other bent portion to be projected into the light guide plate. The illuminating keyboard device of claim 13, wherein the accommodating portion is a third opening, so that the at least one other bent portion of the reflective sheet can be formed according to the third opening. The bending angle of the third opening, and the supporting plate is made of a metal material. The illuminating keyboard device of claim 12, further comprising a reflective layer disposed on a lower surface of the flexible circuit board for reflecting the at least one light beam and projecting the at least one light beam into the light guide plate . The illuminating keyboard device of claim 12, wherein the button module comprises: a plurality of buttons exposed on the upper surface of the illuminating keyboard device, and each of the buttons comprises: a button cap exposed to the illuminating The upper surface of the keyboard device, and each of the button caps has a light exiting area, such that the at least one light beam guided by the light guide plate passes through the plurality of light exiting regions; and a frame is in contact with the button cap to block the button cap And preventing the button cap from coming out of the frame; a connecting component located below the frame and contacting the button cap for moving the button cap up and down relative to the frame; a first magnetic component disposed on the Button cap; and a second magnetic component disposed on the connecting component for generating a magnetic force in response to the first magnetic component to reset the button cap; and a switch circuit board disposed under the connecting component for being The first magnetic element is triggered to generate a plurality of key signals. The illuminating keyboard device of claim 12, wherein the light guide plate comprises: at least one first opening, disposed on the light guide plate and corresponding to the at least one receiving portion, and the at least one receiving portion Forming at least one accommodating space, and accommodating the at least one illuminating element therein, and a plurality of light guiding structures disposed on a lower surface of the light guiding plate for guiding the at least one light beam to be projected to the button module.